As I am in NSW I am unfamiliar with the Victorian legislation, though I am guessing it’s similar to NSW in concept.
The “rules” of a strata are the bylaws. If it’s enshrined in a bylaw, then the OC has the power to have the bylaw enforced. In the case where a perpetrator does not heed a notice to comply, the OC can ask a court to impose fines or directions.
”Rules” drawn up by an OC and not a bylaw, are unenforceable in any way. You could act counter to the rules and the strata has no weight to force one to be compliant.
However, many strata set up rules to help run the building. For example, circulate the car park in a clockwise direction. It makes traffic management easier, but if someone wants to go the other way, the OC can’t do anything about it.